30145951 has 16 divisors (see below), whose sum is σ = 34997760. Its totient is φ = 25678080.

The previous prime is 30145949. The next prime is 30145987. The reversal of 30145951 is 15954103.

30145951 = 2239² + 2240² + ... + 2244².

It is a cyclic number.

It is not a de Polignac number, because 30145951 - 2¹ = 30145949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19530 + ... + 21016.

It is an arithmetic number, because the mean of its divisors is an integer number (2187360).

Almost surely, 2^30145951 is an apocalyptic number.

30145951 is a deficient number, since it is larger than the sum of its proper divisors (4851809).

30145951 is a wasteful number, since it uses less digits than its factorization.

30145951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 30145951 is about 5490.5328521010. The cubic root of 30145951 is about 311.2263286353.

The spelling of 30145951 in words is "thirty million, one hundred forty-five thousand, nine hundred fifty-one".